[To read The Terra Papers - The Hidden History of Planet Earth go to: freedomdomain.com]
5.18.2009
The Terra Papers - Hidden History of Planet Earth
http://www.freedomdomain.com/Terrapapers/terrapapers.html
[To read The Terra Papers - The Hidden History of Planet Earth go to: freedomdomain.com]
[To read The Terra Papers - The Hidden History of Planet Earth go to: freedomdomain.com]
Ball and chain to force children to study
http://www.telegraph.co.uk/education/educationnews/5343111/Ball-and-chain-to-force-children-to-study.html
Concerned mums and dads set the desired study time on the Study Ball and attach it to their child's ankle.
A red digital display counts down the "Study Time Left" and the device beeps and unlocks when the time expires.
The prison-style device weighs 9.5 kg (21 pounds), making it difficult to move while wearing it.
It cannot be locked for more than four hours[!!!] and comes with a safety key that allows the manacle to be opened at anytime.
[...]
"Study Ball helps you study more and more efficiently." [Yep, this is exactly what we need now: an artifact that relates learning to being in jail! I'm I the only one that sees the twisted logic here?]
Read more on this craziness...
A red digital display counts down the "Study Time Left" and the device beeps and unlocks when the time expires.
The prison-style device weighs 9.5 kg (21 pounds), making it difficult to move while wearing it.
It cannot be locked for more than four hours[!!!] and comes with a safety key that allows the manacle to be opened at anytime.
[...]
"Study Ball helps you study more and more efficiently." [Yep, this is exactly what we need now: an artifact that relates learning to being in jail! I'm I the only one that sees the twisted logic here?]
South Korea tries recharging road to power vehicles
http://www.reuters.com/article/scienceNews/idUSTRE54G07U20090517
South Korea's top technology university has developed a plan to power electric cars through recharging strips embedded in roadways that use a technology to transfer energy found in some electric toothbrushes.
The plan, still in the experimental stage, calls for placing power strips about 20 cm (8 inches) to 90 cm (35 inches) wide and perhaps several hundred meters long built into the top of roads.
Vehicles with sensor-driven magnetic devices on their underside can suck up energy as they travel over the strips without coming into direct contact.
"If we place these strips on about 10 percent of roadways in a city, we could power electric vehicles," said Cho Dong-ho, the manager of the "online electric vehicle" plan at the Korea Advanced Institute of Science and Technology.
The university has built a prototype at its campus in Daejeon, about 140 km (90 miles) south of Seoul, for electric-powered golf carts and is working on designs that would power cars and buses.
[...]
The non-contact transfer of electricity, also called inductive charging, works by magnets and cables on the underside of the vehicle making a connection with the current in the recharging strip to receive power as they travel over it.
[...]
Unlike electric lines used for trams, vehicles do not need to be in constant contact with the strips and a person can touch the lines without receiving a shock.
Read more...
The plan, still in the experimental stage, calls for placing power strips about 20 cm (8 inches) to 90 cm (35 inches) wide and perhaps several hundred meters long built into the top of roads.
Vehicles with sensor-driven magnetic devices on their underside can suck up energy as they travel over the strips without coming into direct contact.
"If we place these strips on about 10 percent of roadways in a city, we could power electric vehicles," said Cho Dong-ho, the manager of the "online electric vehicle" plan at the Korea Advanced Institute of Science and Technology.
The university has built a prototype at its campus in Daejeon, about 140 km (90 miles) south of Seoul, for electric-powered golf carts and is working on designs that would power cars and buses.
[...]
The non-contact transfer of electricity, also called inductive charging, works by magnets and cables on the underside of the vehicle making a connection with the current in the recharging strip to receive power as they travel over it.
[...]
Unlike electric lines used for trams, vehicles do not need to be in constant contact with the strips and a person can touch the lines without receiving a shock.
Nuevo patrón encontrado en los números primos
http://www.cienciakanija.com/2009/05/08/nuevo-patron-encontrado-en-los-numeros-primos/
Los números primos han intrigado a los pensadores curiosos durante siglos. Por una parte, los números primos parecen estar distribuidos aleatoriamente entre los números naturales sin otra ley que el azar. Pero por otra parte, la distribución global de los primos revela una regularidad notablemente suave. Esta combinación de aleatoriedad y regularidad ha motivado a los investigadores a buscar patrones en la distribución de los primeros que finalmente puede arrojar luz sobre su naturaleza última.
En un estudio reciente, Bartolo Luque y Lucas Lacasa de la Universidad Politécnica de Madrid en España han descubierto un nuevo patrón en los primos que sorprendentemente había pasado inadvertido hasta el momento. Encontraron que la distribución del primer dígito en la secuencia de números primos puede describirse mediante una generalización de la ley de Benford. Además, este mismo patrón también aparece en otra secuencia de números, la de los primeros dígitos de ceros no triviales en zeta de Riemann, la cual se sabe que está relacionada con la distribución de los primos. Además de proporcionar una visión sobre la naturaleza de los números primos, el hallazgo podría también tener aplicaciones en áreas como la detección de fraudes y el análisis del mercado de valores.
Leer más...
En un estudio reciente, Bartolo Luque y Lucas Lacasa de la Universidad Politécnica de Madrid en España han descubierto un nuevo patrón en los primos que sorprendentemente había pasado inadvertido hasta el momento. Encontraron que la distribución del primer dígito en la secuencia de números primos puede describirse mediante una generalización de la ley de Benford. Además, este mismo patrón también aparece en otra secuencia de números, la de los primeros dígitos de ceros no triviales en zeta de Riemann, la cual se sabe que está relacionada con la distribución de los primos. Además de proporcionar una visión sobre la naturaleza de los números primos, el hallazgo podría también tener aplicaciones en áreas como la detección de fraudes y el análisis del mercado de valores.
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